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etc/protocols - sync with NetBSD-8
[minix.git] / sys / dist / pf / net / pfvar.h
blob9782267e48624fe101035b2c1477b648870f1e08
1 /* $NetBSD: pfvar.h,v 1.22 2014/06/05 23:48:16 rmind Exp $ */
2 /* $OpenBSD: pfvar.h,v 1.254 2007/07/13 09:17:48 markus Exp $ */
3
4 /*
5 * Copyright (c) 2001 Daniel Hartmeier
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * - Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * - Redistributions in binary form must reproduce the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer in the documentation and/or other materials provided
17 * with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 */
33
34 #ifndef _NET_PFVAR_H_
35 #define _NET_PFVAR_H_
36
37 #include <sys/param.h>
38 #include <sys/types.h>
39 #include <sys/queue.h>
40 #include <sys/tree.h>
41 #include <sys/rwlock.h>
42
43 #include <net/radix.h>
44 #if !defined(__NetBSD__) && !defined(__minix)
45 #include <net/route.h>
46 #include <netinet/ip_ipsp.h>
47 #else /* __NetBSD__ || __minix */
48 /* files above include netinet/in.h so include it too for compatibility */
49 #include <netinet/in.h>
50 #endif /* __NetBSD__ || __minix */
51 #include <netinet/tcp_fsm.h>
52
53 #if defined(__NetBSD__) && defined(_KERNEL)
54 #include <net/if_compat.h>
55 #include <net/pf_mtag.h>
56 #endif /* __NetBSD__ && _KERNEL */
57
58 struct ip;
59 struct ip6_hdr;
60
61 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0)
62 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1)
63
64 #define PF_MD5_DIGEST_LENGTH 16
65 #ifdef MD5_DIGEST_LENGTH
66 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH
67 #error
68 #endif
69 #endif
70
71 enum { PF_INOUT, PF_IN, PF_OUT };
72 enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID };
73 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT,
74 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP };
75 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT,
76 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX };
77 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT,
78 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG };
79 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY };
80 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL,
81 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER,
82 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET };
83 enum { PF_GET_NONE, PF_GET_CLR_CNTR };
84
85 /*
86 * Note about PFTM_*: real indices into pf_rule.timeout[] come before
87 * PFTM_MAX, special cases afterwards. See pf_state_expires().
88 */
89 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED,
90 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED,
91 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE,
92 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY,
93 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE,
94 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL,
95 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE,
96 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED,
97 PFTM_UNTIL_PACKET };
98
99 /* PFTM default values */
100 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */
101 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */
102 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */
103 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */
104 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */
105 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */
106 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */
107 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */
108 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */
109 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */
110 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */
111 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */
112 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */
113 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */
114 #define PFTM_FRAG_VAL 30 /* Fragment expire */
115 #define PFTM_INTERVAL_VAL 10 /* Expire interval */
116 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */
117 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */
118
119 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO };
120 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS,
121 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX };
122 #define PF_POOL_IDMASK 0x0f
123 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
124 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
125 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
126 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED };
127 #define PF_POOL_TYPEMASK 0x0f
128 #define PF_POOL_STICKYADDR 0x20
129 #define PF_WSCALE_FLAG 0x80
130 #define PF_WSCALE_MASK 0x0f
131
132 #define PF_LOG 0x01
133 #define PF_LOG_ALL 0x02
134 #define PF_LOG_SOCKET_LOOKUP 0x04
135
136 struct pf_addr {
137 union {
138 struct in_addr v4;
139 struct in6_addr v6;
140 u_int8_t addr8[16];
141 u_int16_t addr16[8];
142 u_int32_t addr32[4];
143 } pfa; /* 128-bit address */
144 #define v4 pfa.v4
145 #define v6 pfa.v6
146 #define addr8 pfa.addr8
147 #define addr16 pfa.addr16
148 #define addr32 pfa.addr32
149 };
150
151 #define PF_TABLE_NAME_SIZE 32
152
153 #define PFI_AFLAG_NETWORK 0x01
154 #define PFI_AFLAG_BROADCAST 0x02
155 #define PFI_AFLAG_PEER 0x04
156 #define PFI_AFLAG_MODEMASK 0x07
157 #define PFI_AFLAG_NOALIAS 0x08
158
159 #ifndef RTLABEL_LEN
160 #define RTLABEL_LEN 32
161 #endif
162
163 struct pf_addr_wrap {
164 union {
165 struct {
166 struct pf_addr addr;
167 struct pf_addr mask;
168 } a;
169 char ifname[IFNAMSIZ];
170 char tblname[PF_TABLE_NAME_SIZE];
171 char rtlabelname[RTLABEL_LEN];
172 u_int32_t rtlabel;
173 } v;
174 union {
175 struct pfi_dynaddr *dyn;
176 struct pfr_ktable *tbl;
177 int dyncnt;
178 int tblcnt;
179 } p;
180 u_int8_t type; /* PF_ADDR_* */
181 u_int8_t iflags; /* PFI_AFLAG_* */
182 };
183
184 #ifdef _KERNEL
185
186 struct pfi_dynaddr {
187 TAILQ_ENTRY(pfi_dynaddr) entry;
188 struct pf_addr pfid_addr4;
189 struct pf_addr pfid_mask4;
190 struct pf_addr pfid_addr6;
191 struct pf_addr pfid_mask6;
192 struct pfr_ktable *pfid_kt;
193 struct pfi_kif *pfid_kif;
194 void *pfid_hook_cookie;
195 int pfid_net; /* mask or 128 */
196 int pfid_acnt4; /* address count IPv4 */
197 int pfid_acnt6; /* address count IPv6 */
198 sa_family_t pfid_af; /* rule af */
199 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
200 };
201
202 /*
203 * Address manipulation macros
204 */
205
206 #ifdef INET
207 #ifndef INET6
208 #define PF_INET_ONLY
209 #endif /* ! INET6 */
210 #endif /* INET */
211
212 #ifdef INET6
213 #ifndef INET
214 #define PF_INET6_ONLY
215 #endif /* ! INET */
216 #endif /* INET6 */
217
218 #ifdef INET
219 #ifdef INET6
220 #define PF_INET_INET6
221 #endif /* INET6 */
222 #endif /* INET */
223
224 #else
225
226 #define PF_INET_INET6
227
228 #endif /* _KERNEL */
229
230 /* Both IPv4 and IPv6 */
231 #ifdef PF_INET_INET6
232
233 #define PF_AEQ(a, b, c) \
234 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
235 ((a)->addr32[3] == (b)->addr32[3] && \
236 (a)->addr32[2] == (b)->addr32[2] && \
237 (a)->addr32[1] == (b)->addr32[1] && \
238 (a)->addr32[0] == (b)->addr32[0])) \
239
240 #define PF_ANEQ(a, b, c) \
241 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
242 ((a)->addr32[3] != (b)->addr32[3] || \
243 (a)->addr32[2] != (b)->addr32[2] || \
244 (a)->addr32[1] != (b)->addr32[1] || \
245 (a)->addr32[0] != (b)->addr32[0])) \
246
247 #define PF_AZERO(a, c) \
248 ((c == AF_INET && !(a)->addr32[0]) || \
249 (!(a)->addr32[0] && !(a)->addr32[1] && \
250 !(a)->addr32[2] && !(a)->addr32[3] )) \
251
252 #define PF_MATCHA(n, a, m, b, f) \
253 pf_match_addr(n, a, m, b, f)
254
255 #define PF_ACPY(a, b, f) \
256 pf_addrcpy(a, b, f)
257
258 #define PF_AINC(a, f) \
259 pf_addr_inc(a, f)
260
261 #define PF_POOLMASK(a, b, c, d, f) \
262 pf_poolmask(a, b, c, d, f)
263
264 #else
265
266 /* Just IPv6 */
267
268 #ifdef PF_INET6_ONLY
269
270 #define PF_AEQ(a, b, c) \
271 ((a)->addr32[3] == (b)->addr32[3] && \
272 (a)->addr32[2] == (b)->addr32[2] && \
273 (a)->addr32[1] == (b)->addr32[1] && \
274 (a)->addr32[0] == (b)->addr32[0]) \
275
276 #define PF_ANEQ(a, b, c) \
277 ((a)->addr32[3] != (b)->addr32[3] || \
278 (a)->addr32[2] != (b)->addr32[2] || \
279 (a)->addr32[1] != (b)->addr32[1] || \
280 (a)->addr32[0] != (b)->addr32[0]) \
281
282 #define PF_AZERO(a, c) \
283 (!(a)->addr32[0] && \
284 !(a)->addr32[1] && \
285 !(a)->addr32[2] && \
286 !(a)->addr32[3] ) \
287
288 #define PF_MATCHA(n, a, m, b, f) \
289 pf_match_addr(n, a, m, b, f)
290
291 #define PF_ACPY(a, b, f) \
292 pf_addrcpy(a, b, f)
293
294 #define PF_AINC(a, f) \
295 pf_addr_inc(a, f)
296
297 #define PF_POOLMASK(a, b, c, d, f) \
298 pf_poolmask(a, b, c, d, f)
299
300 #else
301
302 /* Just IPv4 */
303 #ifdef PF_INET_ONLY
304
305 #define PF_AEQ(a, b, c) \
306 ((a)->addr32[0] == (b)->addr32[0])
307
308 #define PF_ANEQ(a, b, c) \
309 ((a)->addr32[0] != (b)->addr32[0])
310
311 #define PF_AZERO(a, c) \
312 (!(a)->addr32[0])
313
314 #define PF_MATCHA(n, a, m, b, f) \
315 pf_match_addr(n, a, m, b, f)
316
317 #define PF_ACPY(a, b, f) \
318 (a)->v4.s_addr = (b)->v4.s_addr
319
320 #define PF_AINC(a, f) \
321 do { \
322 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
323 } while (0)
324
325 #define PF_POOLMASK(a, b, c, d, f) \
326 do { \
327 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
328 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
329 } while (0)
330
331 #endif /* PF_INET_ONLY */
332 #endif /* PF_INET6_ONLY */
333 #endif /* PF_INET_INET6 */
334
335 #define PF_MISMATCHAW(aw, x, af, neg, ifp) \
336 ( \
337 (((aw)->type == PF_ADDR_NOROUTE && \
338 pf_routable((x), (af), NULL)) || \
339 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
340 pf_routable((x), (af), (ifp))) || \
341 ((aw)->type == PF_ADDR_RTLABEL && \
342 !pf_rtlabel_match((x), (af), (aw))) || \
343 ((aw)->type == PF_ADDR_TABLE && \
344 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
345 ((aw)->type == PF_ADDR_DYNIFTL && \
346 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
347 ((aw)->type == PF_ADDR_ADDRMASK && \
348 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
349 !PF_MATCHA(0, &(aw)->v.a.addr, \
350 &(aw)->v.a.mask, (x), (af))))) != \
351 (neg) \
352 )
353
354
355 struct pf_rule_uid {
356 uid_t uid[2];
357 u_int8_t op;
358 };
359
360 struct pf_rule_gid {
361 uid_t gid[2];
362 u_int8_t op;
363 };
364
365 struct pf_rule_addr {
366 struct pf_addr_wrap addr;
367 u_int16_t port[2];
368 u_int8_t neg;
369 u_int8_t port_op;
370 };
371
372 struct pf_pooladdr {
373 struct pf_addr_wrap addr;
374 TAILQ_ENTRY(pf_pooladdr) entries;
375 char ifname[IFNAMSIZ];
376 struct pfi_kif *kif;
377 };
378
379 TAILQ_HEAD(pf_palist, pf_pooladdr);
380
381 struct pf_poolhashkey {
382 union {
383 u_int8_t key8[16];
384 u_int16_t key16[8];
385 u_int32_t key32[4];
386 } pfk; /* 128-bit hash key */
387 #define key8 pfk.key8
388 #define key16 pfk.key16
389 #define key32 pfk.key32
390 };
391
392 struct pf_pool {
393 struct pf_palist list;
394 struct pf_pooladdr *cur;
395 struct pf_poolhashkey key;
396 struct pf_addr counter;
397 int tblidx;
398 u_int16_t proxy_port[2];
399 u_int8_t port_op;
400 u_int8_t opts;
401 };
402
403
404 /* A packed Operating System description for fingerprinting */
405 typedef u_int32_t pf_osfp_t;
406 #define PF_OSFP_ANY ((pf_osfp_t)0)
407 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
408 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
409
410 struct pf_osfp_entry {
411 SLIST_ENTRY(pf_osfp_entry) fp_entry;
412 pf_osfp_t fp_os;
413 int fp_enflags;
414 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */
415 #define PF_OSFP_GENERIC 0x002 /* generic signature */
416 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */
417 #define PF_OSFP_LEN 32
418 char fp_class_nm[PF_OSFP_LEN];
419 char fp_version_nm[PF_OSFP_LEN];
420 char fp_subtype_nm[PF_OSFP_LEN];
421 };
422 #define PF_OSFP_ENTRY_EQ(a, b) \
423 ((a)->fp_os == (b)->fp_os && \
424 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
425 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
426 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
427
428 /* handle pf_osfp_t packing */
429 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */
430 #define _FP_UNUSED_BITS 1
431 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
432 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
433 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
434 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
435 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
436 ((1 << _FP_CLASS_BITS) - 1); \
437 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
438 ((1 << _FP_VERSION_BITS) - 1);\
439 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
440 } while(0)
441 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \
442 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
443 + _FP_SUBTYPE_BITS); \
444 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
445 _FP_SUBTYPE_BITS; \
446 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
447 } while(0)
448
449 /* the fingerprint of an OSes TCP SYN packet */
450 typedef u_int64_t pf_tcpopts_t;
451 struct pf_os_fingerprint {
452 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
453 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
454 u_int16_t fp_wsize; /* TCP window size */
455 u_int16_t fp_psize; /* ip->ip_len */
456 u_int16_t fp_mss; /* TCP MSS */
457 u_int16_t fp_flags;
458 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
459 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
460 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
461 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
462 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
463 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
464 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
465 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
466 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
467 #define PF_OSFP_MSS 0x0200 /* TCP MSS */
468 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
469 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
470 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
471 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */
472 #define PF_OSFP_INET6 0x4000 /* IPv6 */
473 u_int8_t fp_optcnt; /* TCP option count */
474 u_int8_t fp_wscale; /* TCP window scaling */
475 u_int8_t fp_ttl; /* IPv4 TTL */
476 #define PF_OSFP_MAXTTL_OFFSET 40
477 /* TCP options packing */
478 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
479 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
480 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
481 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
482 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
483 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
484 #define PF_OSFP_MAX_OPTS \
485 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
486 / PF_OSFP_TCPOPT_BITS
487
488 SLIST_ENTRY(pf_os_fingerprint) fp_next;
489 };
490
491 struct pf_osfp_ioctl {
492 struct pf_osfp_entry fp_os;
493 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
494 u_int16_t fp_wsize; /* TCP window size */
495 u_int16_t fp_psize; /* ip->ip_len */
496 u_int16_t fp_mss; /* TCP MSS */
497 u_int16_t fp_flags;
498 u_int8_t fp_optcnt; /* TCP option count */
499 u_int8_t fp_wscale; /* TCP window scaling */
500 u_int8_t fp_ttl; /* IPv4 TTL */
501
502 int fp_getnum; /* DIOCOSFPGET number */
503 };
504
505
506 union pf_rule_ptr {
507 struct pf_rule *ptr;
508 u_int32_t nr;
509 };
510
511 #define PF_ANCHOR_NAME_SIZE 64
512
513 struct pf_rule {
514 struct pf_rule_addr src;
515 struct pf_rule_addr dst;
516 #define PF_SKIP_IFP 0
517 #define PF_SKIP_DIR 1
518 #define PF_SKIP_AF 2
519 #define PF_SKIP_PROTO 3
520 #define PF_SKIP_SRC_ADDR 4
521 #define PF_SKIP_SRC_PORT 5
522 #define PF_SKIP_DST_ADDR 6
523 #define PF_SKIP_DST_PORT 7
524 #define PF_SKIP_COUNT 8
525 union pf_rule_ptr skip[PF_SKIP_COUNT];
526 #define PF_RULE_LABEL_SIZE 64
527 char label[PF_RULE_LABEL_SIZE];
528 #define PF_QNAME_SIZE 64
529 char ifname[IFNAMSIZ];
530 char qname[PF_QNAME_SIZE];
531 char pqname[PF_QNAME_SIZE];
532 #define PF_TAG_NAME_SIZE 64
533 char tagname[PF_TAG_NAME_SIZE];
534 char match_tagname[PF_TAG_NAME_SIZE];
535
536 char overload_tblname[PF_TABLE_NAME_SIZE];
537
538 TAILQ_ENTRY(pf_rule) entries;
539 struct pf_pool rpool;
540
541 u_int64_t evaluations;
542 u_int64_t packets[2];
543 u_int64_t bytes[2];
544
545 struct pfi_kif *kif;
546 struct pf_anchor *anchor;
547 struct pfr_ktable *overload_tbl;
548
549 pf_osfp_t os_fingerprint;
550
551 int rtableid;
552 u_int32_t timeout[PFTM_MAX];
553 u_int32_t states;
554 u_int32_t max_states;
555 u_int32_t src_nodes;
556 u_int32_t max_src_nodes;
557 u_int32_t max_src_states;
558 u_int32_t max_src_conn;
559 struct {
560 u_int32_t limit;
561 u_int32_t seconds;
562 } max_src_conn_rate;
563 u_int32_t qid;
564 u_int32_t pqid;
565 u_int32_t rt_listid;
566 u_int32_t nr;
567 u_int32_t prob;
568 uid_t cuid;
569 pid_t cpid;
570
571 u_int16_t return_icmp;
572 u_int16_t return_icmp6;
573 u_int16_t max_mss;
574 u_int16_t tag;
575 u_int16_t match_tag;
576
577 struct pf_rule_uid uid;
578 struct pf_rule_gid gid;
579
580 u_int32_t rule_flag;
581 u_int8_t action;
582 u_int8_t direction;
583 u_int8_t log;
584 u_int8_t logif;
585 u_int8_t quick;
586 u_int8_t ifnot;
587 u_int8_t match_tag_not;
588 u_int8_t natpass;
589
590 #define PF_STATE_NORMAL 0x1
591 #define PF_STATE_MODULATE 0x2
592 #define PF_STATE_SYNPROXY 0x3
593 u_int8_t keep_state;
594 sa_family_t af;
595 u_int8_t proto;
596 u_int8_t type;
597 u_int8_t code;
598 u_int8_t flags;
599 u_int8_t flagset;
600 u_int8_t min_ttl;
601 u_int8_t allow_opts;
602 u_int8_t rt;
603 u_int8_t return_ttl;
604 u_int8_t tos;
605 u_int8_t anchor_relative;
606 u_int8_t anchor_wildcard;
607
608 #define PF_FLUSH 0x01
609 #define PF_FLUSH_GLOBAL 0x02
610 u_int8_t flush;
611 };
612
613 /* rule flags */
614 #define PFRULE_DROP 0x0000
615 #define PFRULE_RETURNRST 0x0001
616 #define PFRULE_FRAGMENT 0x0002
617 #define PFRULE_RETURNICMP 0x0004
618 #define PFRULE_RETURN 0x0008
619 #define PFRULE_NOSYNC 0x0010
620 #define PFRULE_SRCTRACK 0x0020 /* track source states */
621 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */
622
623 /* scrub flags */
624 #define PFRULE_NODF 0x0100
625 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */
626 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */
627 #define PFRULE_RANDOMID 0x0800
628 #define PFRULE_REASSEMBLE_TCP 0x1000
629
630 /* rule flags again */
631 #define PFRULE_IFBOUND 0x00010000 /* if-bound */
632
633 #define PFSTATE_HIWAT 10000 /* default state table size */
634 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */
635 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */
636
637
638 struct pf_threshold {
639 u_int32_t limit;
640 #define PF_THRESHOLD_MULT 1000
641 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
642 u_int32_t seconds;
643 u_int32_t count;
644 u_int32_t last;
645 };
646
647 struct pf_src_node {
648 RB_ENTRY(pf_src_node) entry;
649 struct pf_addr addr;
650 struct pf_addr raddr;
651 union pf_rule_ptr rule;
652 struct pfi_kif *kif;
653 u_int64_t bytes[2];
654 u_int64_t packets[2];
655 u_int32_t states;
656 u_int32_t conn;
657 struct pf_threshold conn_rate;
658 u_int32_t creation;
659 u_int32_t expire;
660 sa_family_t af;
661 u_int8_t ruletype;
662 };
663
664 #define PFSNODE_HIWAT 10000 /* default source node table size */
665
666 struct pf_state_scrub {
667 struct timeval pfss_last; /* time received last packet */
668 u_int32_t pfss_tsecr; /* last echoed timestamp */
669 u_int32_t pfss_tsval; /* largest timestamp */
670 u_int32_t pfss_tsval0; /* original timestamp */
671 u_int16_t pfss_flags;
672 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
673 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
674 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
675 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
676 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
677 u_int8_t pfss_ttl; /* stashed TTL */
678 u_int8_t pad;
679 u_int32_t pfss_ts_mod; /* timestamp modulation */
680 };
681
682 struct pf_state_host {
683 struct pf_addr addr;
684 u_int16_t port;
685 u_int16_t pad;
686 };
687
688 struct pf_state_peer {
689 u_int32_t seqlo; /* Max sequence number sent */
690 u_int32_t seqhi; /* Max the other end ACKd + win */
691 u_int32_t seqdiff; /* Sequence number modulator */
692 u_int16_t max_win; /* largest window (pre scaling) */
693 u_int8_t state; /* active state level */
694 u_int8_t wscale; /* window scaling factor */
695 u_int16_t mss; /* Maximum segment size option */
696 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
697 struct pf_state_scrub *scrub; /* state is scrubbed */
698 u_int8_t pad[3];
699 };
700
701 TAILQ_HEAD(pf_state_queue, pf_state);
702
703 /* keep synced with struct pf_state_key, used in RB_FIND */
704 struct pf_state_key_cmp {
705 struct pf_state_host lan;
706 struct pf_state_host gwy;
707 struct pf_state_host ext;
708 sa_family_t af;
709 u_int8_t proto;
710 u_int8_t direction;
711 u_int8_t pad;
712 };
713
714 TAILQ_HEAD(pf_statelist, pf_state);
715
716 struct pf_state_key {
717 struct pf_state_host lan;
718 struct pf_state_host gwy;
719 struct pf_state_host ext;
720 sa_family_t af;
721 u_int8_t proto;
722 u_int8_t direction;
723 u_int8_t pad;
724
725 RB_ENTRY(pf_state_key) entry_lan_ext;
726 RB_ENTRY(pf_state_key) entry_ext_gwy;
727 struct pf_statelist states;
728 u_short refcnt; /* same size as if_index */
729 };
730
731
732 /* keep synced with struct pf_state, used in RB_FIND */
733 struct pf_state_cmp {
734 u_int64_t id;
735 u_int32_t creatorid;
736 u_int32_t pad;
737 };
738
739 struct pf_state {
740 u_int64_t id;
741 u_int32_t creatorid;
742 u_int32_t pad;
743
744 TAILQ_ENTRY(pf_state) entry_list;
745 TAILQ_ENTRY(pf_state) next;
746 RB_ENTRY(pf_state) entry_id;
747 struct pf_state_peer src;
748 struct pf_state_peer dst;
749 union pf_rule_ptr rule;
750 union pf_rule_ptr anchor;
751 union pf_rule_ptr nat_rule;
752 struct pf_addr rt_addr;
753 struct pf_state_key *state_key;
754 struct pfi_kif *kif;
755 struct pfi_kif *rt_kif;
756 struct pf_src_node *src_node;
757 struct pf_src_node *nat_src_node;
758 u_int64_t packets[2];
759 u_int64_t bytes[2];
760 u_int32_t creation;
761 u_int32_t expire;
762 u_int32_t pfsync_time;
763 u_int16_t tag;
764 u_int8_t log;
765 u_int8_t allow_opts;
766 u_int8_t timeout;
767 u_int8_t sync_flags;
768 #define PFSTATE_NOSYNC 0x01
769 #define PFSTATE_FROMSYNC 0x02
770 #define PFSTATE_STALE 0x04
771 };
772
773 /*
774 * Unified state structures for pulling states out of the kernel
775 * used by pfsync(4) and the pf(4) ioctl.
776 */
777 struct pfsync_state_scrub {
778 u_int16_t pfss_flags;
779 u_int8_t pfss_ttl; /* stashed TTL */
780 #define PFSYNC_SCRUB_FLAG_VALID 0x01
781 u_int8_t scrub_flag;
782 u_int32_t pfss_ts_mod; /* timestamp modulation */
783 } __packed;
784
785 struct pfsync_state_host {
786 struct pf_addr addr;
787 u_int16_t port;
788 u_int16_t pad[3];
789 } __packed;
790
791 struct pfsync_state_peer {
792 struct pfsync_state_scrub scrub; /* state is scrubbed */
793 u_int32_t seqlo; /* Max sequence number sent */
794 u_int32_t seqhi; /* Max the other end ACKd + win */
795 u_int32_t seqdiff; /* Sequence number modulator */
796 u_int16_t max_win; /* largest window (pre scaling) */
797 u_int16_t mss; /* Maximum segment size option */
798 u_int8_t state; /* active state level */
799 u_int8_t wscale; /* window scaling factor */
800 u_int8_t pad[6];
801 } __packed;
802
803 struct pfsync_state {
804 u_int32_t id[2];
805 char ifname[IFNAMSIZ];
806 struct pfsync_state_host lan;
807 struct pfsync_state_host gwy;
808 struct pfsync_state_host ext;
809 struct pfsync_state_peer src;
810 struct pfsync_state_peer dst;
811 struct pf_addr rt_addr;
812 u_int32_t rule;
813 u_int32_t anchor;
814 u_int32_t nat_rule;
815 u_int32_t creation;
816 u_int32_t expire;
817 u_int32_t packets[2][2];
818 u_int32_t bytes[2][2];
819 u_int32_t creatorid;
820 sa_family_t af;
821 u_int8_t proto;
822 u_int8_t direction;
823 u_int8_t log;
824 u_int8_t allow_opts;
825 u_int8_t timeout;
826 u_int8_t sync_flags;
827 u_int8_t updates;
828 } __packed;
829
830 #define PFSYNC_FLAG_COMPRESS 0x01
831 #define PFSYNC_FLAG_STALE 0x02
832 #define PFSYNC_FLAG_SRCNODE 0x04
833 #define PFSYNC_FLAG_NATSRCNODE 0x08
834
835 /* for copies to/from userland via pf_ioctl() */
836 #define pf_state_peer_to_pfsync(s,d) do { \
837 (d)->seqlo = (s)->seqlo; \
838 (d)->seqhi = (s)->seqhi; \
839 (d)->seqdiff = (s)->seqdiff; \
840 (d)->max_win = (s)->max_win; \
841 (d)->mss = (s)->mss; \
842 (d)->state = (s)->state; \
843 (d)->wscale = (s)->wscale; \
844 if ((s)->scrub) { \
845 (d)->scrub.pfss_flags = \
846 (s)->scrub->pfss_flags & PFSS_TIMESTAMP; \
847 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
848 (d)->scrub.pfss_ts_mod = (s)->scrub->pfss_ts_mod; \
849 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
850 } \
851 } while (0)
852
853 #define pf_state_peer_from_pfsync(s,d) do { \
854 (d)->seqlo = (s)->seqlo; \
855 (d)->seqhi = (s)->seqhi; \
856 (d)->seqdiff = (s)->seqdiff; \
857 (d)->max_win = (s)->max_win; \
858 (d)->mss = ntohs((s)->mss); \
859 (d)->state = (s)->state; \
860 (d)->wscale = (s)->wscale; \
861 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
862 (d)->scrub != NULL) { \
863 (d)->scrub->pfss_flags = \
864 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
865 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
866 (d)->scrub->pfss_ts_mod = (s)->scrub.pfss_ts_mod; \
867 } \
868 } while (0)
869
870 #define pf_state_counter_to_pfsync(s,d) do { \
871 d[0] = (s>>32)&0xffffffff; \
872 d[1] = s&0xffffffff; \
873 } while (0)
874
875 #define pf_state_counter_from_pfsync(s) \
876 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
877
878
879
880 TAILQ_HEAD(pf_rulequeue, pf_rule);
881
882 struct pf_anchor;
883
884 struct pf_ruleset {
885 struct {
886 struct pf_rulequeue queues[2];
887 struct {
888 struct pf_rulequeue *ptr;
889 struct pf_rule **ptr_array;
890 u_int32_t rcount;
891 u_int32_t ticket;
892 int open;
893 } active, inactive;
894 } rules[PF_RULESET_MAX];
895 struct pf_anchor *anchor;
896 u_int32_t tticket;
897 int tables;
898 int topen;
899 };
900
901 RB_HEAD(pf_anchor_global, pf_anchor);
902 RB_HEAD(pf_anchor_node, pf_anchor);
903 struct pf_anchor {
904 RB_ENTRY(pf_anchor) entry_global;
905 RB_ENTRY(pf_anchor) entry_node;
906 struct pf_anchor *parent;
907 struct pf_anchor_node children;
908 char name[PF_ANCHOR_NAME_SIZE];
909 char path[MAXPATHLEN];
910 struct pf_ruleset ruleset;
911 int refcnt; /* anchor rules */
912 int match;
913 };
914 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
915 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
916
917 #define PF_RESERVED_ANCHOR "_pf"
918
919 #define PFR_TFLAG_PERSIST 0x00000001
920 #define PFR_TFLAG_CONST 0x00000002
921 #define PFR_TFLAG_ACTIVE 0x00000004
922 #define PFR_TFLAG_INACTIVE 0x00000008
923 #define PFR_TFLAG_REFERENCED 0x00000010
924 #define PFR_TFLAG_REFDANCHOR 0x00000020
925 #define PFR_TFLAG_USRMASK 0x00000003
926 #define PFR_TFLAG_SETMASK 0x0000003C
927 #define PFR_TFLAG_ALLMASK 0x0000003F
928
929 struct pfr_table {
930 char pfrt_anchor[MAXPATHLEN];
931 char pfrt_name[PF_TABLE_NAME_SIZE];
932 u_int32_t pfrt_flags;
933 u_int8_t pfrt_fback;
934 };
935
936 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
937 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
938 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX };
939
940 struct pfr_addr {
941 union {
942 struct in_addr _pfra_ip4addr;
943 struct in6_addr _pfra_ip6addr;
944 } pfra_u;
945 u_int8_t pfra_af;
946 u_int8_t pfra_net;
947 u_int8_t pfra_not;
948 u_int8_t pfra_fback;
949 };
950 #define pfra_ip4addr pfra_u._pfra_ip4addr
951 #define pfra_ip6addr pfra_u._pfra_ip6addr
952
953 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
954 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
955 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
956
957 struct pfr_astats {
958 struct pfr_addr pfras_a;
959 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
960 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
961 long pfras_tzero;
962 };
963
964 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
965
966 struct pfr_tstats {
967 struct pfr_table pfrts_t;
968 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
969 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
970 u_int64_t pfrts_match;
971 u_int64_t pfrts_nomatch;
972 long pfrts_tzero;
973 int pfrts_cnt;
974 int pfrts_refcnt[PFR_REFCNT_MAX];
975 };
976 #define pfrts_name pfrts_t.pfrt_name
977 #define pfrts_flags pfrts_t.pfrt_flags
978
979 #ifndef _SOCKADDR_UNION_DEFINED
980 #define _SOCKADDR_UNION_DEFINED
981 union sockaddr_union {
982 struct sockaddr sa;
983 struct sockaddr_in sin;
984 struct sockaddr_in6 sin6;
985 };
986 #endif /* _SOCKADDR_UNION_DEFINED */
987
988 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
989 struct pfr_kentry {
990 struct radix_node pfrke_node[2];
991 union sockaddr_union pfrke_sa;
992 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
993 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
994 SLIST_ENTRY(pfr_kentry) pfrke_workq;
995 long pfrke_tzero;
996 u_int8_t pfrke_af;
997 u_int8_t pfrke_net;
998 u_int8_t pfrke_not;
999 u_int8_t pfrke_mark;
1000 u_int8_t pfrke_intrpool;
1001 };
1002
1003 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1004 RB_HEAD(pfr_ktablehead, pfr_ktable);
1005 struct pfr_ktable {
1006 struct pfr_tstats pfrkt_ts;
1007 RB_ENTRY(pfr_ktable) pfrkt_tree;
1008 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1009 struct radix_node_head *pfrkt_ip4;
1010 struct radix_node_head *pfrkt_ip6;
1011 struct pfr_ktable *pfrkt_shadow;
1012 struct pfr_ktable *pfrkt_root;
1013 struct pf_ruleset *pfrkt_rs;
1014 long pfrkt_larg;
1015 int pfrkt_nflags;
1016 };
1017 #define pfrkt_t pfrkt_ts.pfrts_t
1018 #define pfrkt_name pfrkt_t.pfrt_name
1019 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1020 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1021 #define pfrkt_flags pfrkt_t.pfrt_flags
1022 #define pfrkt_cnt pfrkt_ts.pfrts_cnt
1023 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
1024 #define pfrkt_packets pfrkt_ts.pfrts_packets
1025 #define pfrkt_bytes pfrkt_ts.pfrts_bytes
1026 #define pfrkt_match pfrkt_ts.pfrts_match
1027 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
1028 #define pfrkt_tzero pfrkt_ts.pfrts_tzero
1029
1030 RB_HEAD(pf_state_tree_lan_ext, pf_state_key);
1031 RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state_key,
1032 entry_lan_ext, pf_state_compare_lan_ext);
1033
1034 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key);
1035 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key,
1036 entry_ext_gwy, pf_state_compare_ext_gwy);
1037
1038 RB_HEAD(pfi_ifhead, pfi_kif);
1039
1040 /* state tables */
1041 extern struct pf_state_tree_lan_ext pf_statetbl_lan_ext;
1042 extern struct pf_state_tree_ext_gwy pf_statetbl_ext_gwy;
1043
1044 /* keep synced with pfi_kif, used in RB_FIND */
1045 struct pfi_kif_cmp {
1046 char pfik_name[IFNAMSIZ];
1047 };
1048
1049 struct pfi_kif {
1050 char pfik_name[IFNAMSIZ];
1051 RB_ENTRY(pfi_kif) pfik_tree;
1052 u_int64_t pfik_packets[2][2][2];
1053 u_int64_t pfik_bytes[2][2][2];
1054 u_int32_t pfik_tzero;
1055 int pfik_flags;
1056 void *pfik_ah_cookie;
1057 struct ifnet *pfik_ifp;
1058 struct ifg_group *pfik_group;
1059 int pfik_states;
1060 int pfik_rules;
1061 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1062 };
1063
1064 enum pfi_kif_refs {
1065 PFI_KIF_REF_NONE,
1066 PFI_KIF_REF_STATE,
1067 PFI_KIF_REF_RULE
1068 };
1069
1070 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1071
1072 struct pf_pdesc {
1073 struct {
1074 int done;
1075 uid_t uid;
1076 gid_t gid;
1077 pid_t pid;
1078 } lookup;
1079 u_int64_t tot_len; /* Make Mickey money */
1080 union {
1081 struct tcphdr *tcp;
1082 struct udphdr *udp;
1083 struct icmp *icmp;
1084 #ifdef INET6
1085 struct icmp6_hdr *icmp6;
1086 #endif /* INET6 */
1087 void *any;
1088 } hdr;
1089 struct pf_addr baddr; /* address before translation */
1090 struct pf_addr naddr; /* address after translation */
1091 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
1092 struct pf_addr *src;
1093 struct pf_addr *dst;
1094 struct ether_header
1095 *eh;
1096 u_int16_t *ip_sum;
1097 u_int32_t p_len; /* total length of payload */
1098 u_int16_t flags; /* Let SCRUB trigger behavior in
1099 * state code. Easier than tags */
1100 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1101 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1102 sa_family_t af;
1103 u_int8_t proto;
1104 u_int8_t tos;
1105 };
1106
1107 /* flags for RDR options */
1108 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1109 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1110
1111 /* Reasons code for passing/dropping a packet */
1112 #define PFRES_MATCH 0 /* Explicit match of a rule */
1113 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */
1114 #define PFRES_FRAG 2 /* Dropping following fragment */
1115 #define PFRES_SHORT 3 /* Dropping short packet */
1116 #define PFRES_NORM 4 /* Dropping by normalizer */
1117 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */
1118 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */
1119 #define PFRES_CONGEST 7 /* Congestion (of IP queue) */
1120 #define PFRES_IPOPTIONS 8 /* IP option */
1121 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */
1122 #define PFRES_BADSTATE 10 /* State mismatch */
1123 #define PFRES_STATEINS 11 /* State insertion failure */
1124 #define PFRES_MAXSTATES 12 /* State limit */
1125 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */
1126 #define PFRES_SYNPROXY 14 /* SYN proxy */
1127 #define PFRES_STATELOCKED 15 /* state table locked */
1128 #define PFRES_MAX 16 /* total+1 */
1129
1130 #define PFRES_NAMES { \
1131 "match", \
1132 "bad-offset", \
1133 "fragment", \
1134 "short", \
1135 "normalize", \
1136 "memory", \
1137 "bad-timestamp", \
1138 "congestion", \
1139 "ip-option", \
1140 "proto-cksum", \
1141 "state-mismatch", \
1142 "state-insert", \
1143 "state-limit", \
1144 "src-limit", \
1145 "synproxy", \
1146 "state-locked", \
1147 NULL \
1148 }
1149
1150 /* Counters for other things we want to keep track of */
1151 #define LCNT_STATES 0 /* states */
1152 #define LCNT_SRCSTATES 1 /* max-src-states */
1153 #define LCNT_SRCNODES 2 /* max-src-nodes */
1154 #define LCNT_SRCCONN 3 /* max-src-conn */
1155 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */
1156 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */
1157 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */
1158 #define LCNT_MAX 7 /* total+1 */
1159
1160 #define LCNT_NAMES { \
1161 "max states per rule", \
1162 "max-src-states", \
1163 "max-src-nodes", \
1164 "max-src-conn", \
1165 "max-src-conn-rate", \
1166 "overload table insertion", \
1167 "overload flush states", \
1168 NULL \
1169 }
1170
1171 /* UDP state enumeration */
1172 #define PFUDPS_NO_TRAFFIC 0
1173 #define PFUDPS_SINGLE 1
1174 #define PFUDPS_MULTIPLE 2
1175
1176 #define PFUDPS_NSTATES 3 /* number of state levels */
1177
1178 #define PFUDPS_NAMES { \
1179 "NO_TRAFFIC", \
1180 "SINGLE", \
1181 "MULTIPLE", \
1182 NULL \
1183 }
1184
1185 /* Other protocol state enumeration */
1186 #define PFOTHERS_NO_TRAFFIC 0
1187 #define PFOTHERS_SINGLE 1
1188 #define PFOTHERS_MULTIPLE 2
1189
1190 #define PFOTHERS_NSTATES 3 /* number of state levels */
1191
1192 #define PFOTHERS_NAMES { \
1193 "NO_TRAFFIC", \
1194 "SINGLE", \
1195 "MULTIPLE", \
1196 NULL \
1197 }
1198
1199 #define FCNT_STATE_SEARCH 0
1200 #define FCNT_STATE_INSERT 1
1201 #define FCNT_STATE_REMOVALS 2
1202 #define FCNT_MAX 3
1203
1204 #define SCNT_SRC_NODE_SEARCH 0
1205 #define SCNT_SRC_NODE_INSERT 1
1206 #define SCNT_SRC_NODE_REMOVALS 2
1207 #define SCNT_MAX 3
1208
1209 #define ACTION_SET(a, x) \
1210 do { \
1211 if ((a) != NULL) \
1212 *(a) = (x); \
1213 } while (0)
1214
1215 #define REASON_SET(a, x) \
1216 do { \
1217 if ((a) != NULL) \
1218 *(a) = (x); \
1219 if (x < PFRES_MAX) \
1220 pf_status.counters[x]++; \
1221 } while (0)
1222 #define REASON_SET_NOPTR(a, x) \
1223 do { \
1224 *(a) = (x); \
1225 if (x < PFRES_MAX) \
1226 pf_status.counters[x]++; \
1227 } while (0)
1228
1229 struct pf_status {
1230 u_int64_t counters[PFRES_MAX];
1231 u_int64_t lcounters[LCNT_MAX]; /* limit counters */
1232 u_int64_t fcounters[FCNT_MAX];
1233 u_int64_t scounters[SCNT_MAX];
1234 u_int64_t pcounters[2][2][3];
1235 u_int64_t bcounters[2][2];
1236 u_int64_t stateid;
1237 u_int32_t running;
1238 u_int32_t states;
1239 u_int32_t src_nodes;
1240 u_int32_t since;
1241 u_int32_t debug;
1242 u_int32_t hostid;
1243 char ifname[IFNAMSIZ];
1244 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1245 };
1246
1247 struct cbq_opts {
1248 u_int minburst;
1249 u_int maxburst;
1250 u_int pktsize;
1251 u_int maxpktsize;
1252 u_int ns_per_byte;
1253 u_int maxidle;
1254 int minidle;
1255 u_int offtime;
1256 int flags;
1257 };
1258
1259 struct priq_opts {
1260 int flags;
1261 };
1262
1263 struct hfsc_opts {
1264 /* real-time service curve */
1265 u_int rtsc_m1; /* slope of the 1st segment in bps */
1266 u_int rtsc_d; /* the x-projection of m1 in msec */
1267 u_int rtsc_m2; /* slope of the 2nd segment in bps */
1268 /* link-sharing service curve */
1269 u_int lssc_m1;
1270 u_int lssc_d;
1271 u_int lssc_m2;
1272 /* upper-limit service curve */
1273 u_int ulsc_m1;
1274 u_int ulsc_d;
1275 u_int ulsc_m2;
1276 int flags;
1277 };
1278
1279 struct pf_altq {
1280 char ifname[IFNAMSIZ];
1281
1282 void *altq_disc; /* discipline-specific state */
1283 TAILQ_ENTRY(pf_altq) entries;
1284
1285 /* scheduler spec */
1286 u_int8_t scheduler; /* scheduler type */
1287 u_int16_t tbrsize; /* tokenbucket regulator size */
1288 u_int32_t ifbandwidth; /* interface bandwidth */
1289
1290 /* queue spec */
1291 char qname[PF_QNAME_SIZE]; /* queue name */
1292 char parent[PF_QNAME_SIZE]; /* parent name */
1293 u_int32_t parent_qid; /* parent queue id */
1294 u_int32_t bandwidth; /* queue bandwidth */
1295 u_int8_t priority; /* priority */
1296 u_int16_t qlimit; /* queue size limit */
1297 u_int16_t flags; /* misc flags */
1298 union {
1299 struct cbq_opts cbq_opts;
1300 struct priq_opts priq_opts;
1301 struct hfsc_opts hfsc_opts;
1302 } pq_u;
1303
1304 u_int32_t qid; /* return value */
1305 };
1306
1307 struct pf_tag {
1308 u_int16_t tag; /* tag id */
1309 };
1310
1311 struct pf_tagname {
1312 TAILQ_ENTRY(pf_tagname) entries;
1313 char name[PF_TAG_NAME_SIZE];
1314 u_int16_t tag;
1315 int ref;
1316 };
1317
1318 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1319 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */
1320 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */
1321 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */
1322
1323 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */
1324 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1325 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */
1326
1327 /*
1328 * ioctl parameter structures
1329 */
1330
1331 struct pfioc_pooladdr {
1332 u_int32_t action;
1333 u_int32_t ticket;
1334 u_int32_t nr;
1335 u_int32_t r_num;
1336 u_int8_t r_action;
1337 u_int8_t r_last;
1338 u_int8_t af;
1339 char anchor[MAXPATHLEN];
1340 struct pf_pooladdr addr;
1341 };
1342
1343 struct pfioc_rule {
1344 u_int32_t action;
1345 u_int32_t ticket;
1346 u_int32_t pool_ticket;
1347 u_int32_t nr;
1348 char anchor[MAXPATHLEN];
1349 char anchor_call[MAXPATHLEN];
1350 struct pf_rule rule;
1351 };
1352
1353 struct pfioc_natlook {
1354 struct pf_addr saddr;
1355 struct pf_addr daddr;
1356 struct pf_addr rsaddr;
1357 struct pf_addr rdaddr;
1358 u_int16_t sport;
1359 u_int16_t dport;
1360 u_int16_t rsport;
1361 u_int16_t rdport;
1362 sa_family_t af;
1363 u_int8_t proto;
1364 u_int8_t direction;
1365 };
1366
1367 struct pfioc_state {
1368 u_int32_t nr;
1369 void *state;
1370 };
1371
1372 struct pfioc_src_node_kill {
1373 /* XXX returns the number of src nodes killed in psnk_af */
1374 sa_family_t psnk_af;
1375 struct pf_rule_addr psnk_src;
1376 struct pf_rule_addr psnk_dst;
1377 };
1378
1379 struct pfioc_state_kill {
1380 /* XXX returns the number of states killed in psk_af */
1381 sa_family_t psk_af;
1382 int psk_proto;
1383 struct pf_rule_addr psk_src;
1384 struct pf_rule_addr psk_dst;
1385 char psk_ifname[IFNAMSIZ];
1386 };
1387
1388 struct pfioc_states {
1389 int ps_len;
1390 union {
1391 void *psu_buf;
1392 struct pfsync_state *psu_states;
1393 } ps_u;
1394 #define ps_buf ps_u.psu_buf
1395 #define ps_states ps_u.psu_states
1396 };
1397
1398 struct pfioc_src_nodes {
1399 int psn_len;
1400 union {
1401 void *psu_buf;
1402 struct pf_src_node *psu_src_nodes;
1403 } psn_u;
1404 #define psn_buf psn_u.psu_buf
1405 #define psn_src_nodes psn_u.psu_src_nodes
1406 };
1407
1408 struct pfioc_if {
1409 char ifname[IFNAMSIZ];
1410 };
1411
1412 struct pfioc_tm {
1413 int timeout;
1414 int seconds;
1415 };
1416
1417 struct pfioc_limit {
1418 int index;
1419 unsigned limit;
1420 };
1421
1422 struct pfioc_altq {
1423 u_int32_t action;
1424 u_int32_t ticket;
1425 u_int32_t nr;
1426 struct pf_altq altq;
1427 };
1428
1429 struct pfioc_qstats {
1430 u_int32_t ticket;
1431 u_int32_t nr;
1432 void *buf;
1433 int nbytes;
1434 u_int8_t scheduler;
1435 };
1436
1437 struct pfioc_ruleset {
1438 u_int32_t nr;
1439 char path[MAXPATHLEN];
1440 char name[PF_ANCHOR_NAME_SIZE];
1441 };
1442
1443 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
1444 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1445 struct pfioc_trans {
1446 int size; /* number of elements */
1447 int esize; /* size of each element in bytes */
1448 struct pfioc_trans_e {
1449 int rs_num;
1450 char anchor[MAXPATHLEN];
1451 u_int32_t ticket;
1452 } *array;
1453 };
1454
1455 #define PFR_FLAG_ATOMIC 0x00000001
1456 #define PFR_FLAG_DUMMY 0x00000002
1457 #define PFR_FLAG_FEEDBACK 0x00000004
1458 #define PFR_FLAG_CLSTATS 0x00000008
1459 #define PFR_FLAG_ADDRSTOO 0x00000010
1460 #define PFR_FLAG_REPLACE 0x00000020
1461 #define PFR_FLAG_ALLRSETS 0x00000040
1462 #define PFR_FLAG_ALLMASK 0x0000007F
1463 #ifdef _KERNEL
1464 #define PFR_FLAG_USERIOCTL 0x10000000
1465 #endif
1466
1467 struct pfioc_table {
1468 struct pfr_table pfrio_table;
1469 void *pfrio_buffer;
1470 int pfrio_esize;
1471 int pfrio_size;
1472 int pfrio_size2;
1473 int pfrio_nadd;
1474 int pfrio_ndel;
1475 int pfrio_nchange;
1476 int pfrio_flags;
1477 u_int32_t pfrio_ticket;
1478 };
1479 #define pfrio_exists pfrio_nadd
1480 #define pfrio_nzero pfrio_nadd
1481 #define pfrio_nmatch pfrio_nadd
1482 #define pfrio_naddr pfrio_size2
1483 #define pfrio_setflag pfrio_size2
1484 #define pfrio_clrflag pfrio_nadd
1485
1486 struct pfioc_iface {
1487 char pfiio_name[IFNAMSIZ];
1488 void *pfiio_buffer;
1489 int pfiio_esize;
1490 int pfiio_size;
1491 int pfiio_nzero;
1492 int pfiio_flags;
1493 };
1494
1495
1496 /*
1497 * ioctl operations
1498 */
1499
1500 #define DIOCSTART _IO ('D', 1)
1501 #define DIOCSTOP _IO ('D', 2)
1502 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1503 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1504 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1505 #define DIOCSETLCK _IOWR('D', 8, uint32_t)
1506 /* XXX cut 9 - 17 */
1507 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
1508 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1509 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1510 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1511 #define DIOCCLRSTATUS _IO ('D', 22)
1512 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1513 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1514 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1515 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1516 /* XXX cut 26 - 28 */
1517 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1518 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1519 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1520 #define DIOCCLRRULECTRS _IO ('D', 38)
1521 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1522 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1523 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1524 #define DIOCSTARTALTQ _IO ('D', 42)
1525 #define DIOCSTOPALTQ _IO ('D', 43)
1526 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
1527 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
1528 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
1529 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
1530 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
1531 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1532 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1533 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1534 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1535 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1536 #define DIOCADDSTATES _IOWR('D', 56, struct pfioc_states)
1537 /* XXX cut 57 - 57 */
1538 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1539 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1540 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1541 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1542 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1543 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1544 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1545 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1546 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1547 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1548 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1549 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1550 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1551 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1552 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1553 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1554 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1555 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1556 #define DIOCOSFPFLUSH _IO('D', 78)
1557 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1558 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1559 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
1560 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
1561 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
1562 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
1563 #define DIOCCLRSRCNODES _IO('D', 85)
1564 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
1565 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
1566 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
1567 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
1568 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
1569
1570 #ifdef _KERNEL
1571 RB_HEAD(pf_src_tree, pf_src_node);
1572 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare);
1573 extern struct pf_src_tree tree_src_tracking;
1574
1575 RB_HEAD(pf_state_tree_id, pf_state);
1576 RB_PROTOTYPE(pf_state_tree_id, pf_state,
1577 entry_id, pf_state_compare_id);
1578 extern struct pf_state_tree_id tree_id;
1579 extern struct pf_state_queue state_list;
1580
1581 TAILQ_HEAD(pf_poolqueue, pf_pool);
1582 extern struct pf_poolqueue pf_pools[2];
1583 TAILQ_HEAD(pf_altqqueue, pf_altq);
1584 extern struct pf_altqqueue pf_altqs[2];
1585 extern struct pf_palist pf_pabuf;
1586
1587 extern u_int32_t ticket_altqs_active;
1588 extern u_int32_t ticket_altqs_inactive;
1589 extern int altqs_inactive_open;
1590 extern u_int32_t ticket_pabuf;
1591 extern struct pf_altqqueue *pf_altqs_active;
1592 extern struct pf_altqqueue *pf_altqs_inactive;
1593 extern struct pf_poolqueue *pf_pools_active;
1594 extern struct pf_poolqueue *pf_pools_inactive;
1595 extern int pf_tbladdr_setup(struct pf_ruleset *,
1596 struct pf_addr_wrap *);
1597 extern void pf_tbladdr_remove(struct pf_addr_wrap *);
1598 extern void pf_tbladdr_copyout(struct pf_addr_wrap *);
1599 extern void pf_calc_skip_steps(struct pf_rulequeue *);
1600 extern struct pool pf_src_tree_pl, pf_rule_pl;
1601 extern struct pool pf_state_pl, pf_state_key_pl, pf_altq_pl,
1602 pf_pooladdr_pl;
1603 extern struct pool pf_state_scrub_pl;
1604 extern void pf_purge_thread(void *);
1605 extern void pf_purge_expired_src_nodes(int);
1606 extern void pf_purge_expired_states(u_int32_t);
1607 extern void pf_unlink_state(struct pf_state *);
1608 extern void pf_free_state(struct pf_state *);
1609 extern int pf_insert_state(struct pfi_kif *,
1610 struct pf_state *);
1611 extern int pf_insert_src_node(struct pf_src_node **,
1612 struct pf_rule *, struct pf_addr *,
1613 sa_family_t);
1614 void pf_src_tree_remove_state(struct pf_state *);
1615 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *);
1616 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
1617 u_int8_t, int *);
1618 extern void pf_print_state(struct pf_state *);
1619 extern void pf_print_flags(u_int8_t);
1620 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
1621 u_int8_t);
1622
1623 extern struct ifnet *sync_ifp;
1624 extern struct pf_rule pf_default_rule;
1625 extern void pf_addrcpy(struct pf_addr *,
1626 const struct pf_addr *, u_int8_t);
1627 void pf_rm_rule(struct pf_rulequeue *,
1628 struct pf_rule *);
1629
1630 #ifdef INET
1631 int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *);
1632 #endif /* INET */
1633
1634 #ifdef INET6
1635 int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *);
1636 void pf_poolmask(struct pf_addr *, struct pf_addr*,
1637 struct pf_addr *, const struct pf_addr *, u_int8_t);
1638 void pf_addr_inc(struct pf_addr *, sa_family_t);
1639 #endif /* INET6 */
1640
1641 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
1642 sa_family_t);
1643 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
1644 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t,
1645 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *,
1646 struct pf_pdesc *);
1647 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
1648 struct pf_addr *, sa_family_t);
1649 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t);
1650 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
1651 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t);
1652 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t);
1653
1654 void pf_normalize_init(void);
1655 #ifdef _MODULE
1656 void pf_normalize_destroy(void);
1657 #endif /* _MODULE */
1658 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *,
1659 struct pf_pdesc *);
1660 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *,
1661 struct pf_pdesc *);
1662 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *,
1663 struct pf_pdesc *);
1664 void pf_normalize_tcp_cleanup(struct pf_state *);
1665 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
1666 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
1667 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
1668 u_short *, struct tcphdr *, struct pf_state *,
1669 struct pf_state_peer *, struct pf_state_peer *, int *);
1670 u_int32_t
1671 pf_state_expires(const struct pf_state *);
1672 void pf_purge_expired_fragments(void);
1673 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *);
1674 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *);
1675 int pf_socket_lookup(int, struct pf_pdesc *);
1676 struct pf_state_key *
1677 pf_alloc_state_key(struct pf_state *);
1678 void pfr_initialize(void);
1679 #ifdef _MODULE
1680 void pfr_destroy(void);
1681 #endif /* _MODULE */
1682 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
1683 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
1684 u_int64_t, int, int, int);
1685 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *,
1686 struct pf_addr **, struct pf_addr **, sa_family_t);
1687 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
1688 struct pfr_ktable *
1689 pfr_attach_table(struct pf_ruleset *, char *);
1690 void pfr_detach_table(struct pfr_ktable *);
1691 int pfr_clr_tables(struct pfr_table *, int *, int);
1692 int pfr_add_tables(struct pfr_table *, int, int *, int);
1693 int pfr_del_tables(struct pfr_table *, int, int *, int);
1694 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
1695 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
1696 int pfr_clr_tstats(struct pfr_table *, int, int *, int);
1697 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
1698 int pfr_clr_addrs(struct pfr_table *, int *, int);
1699 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
1700 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1701 int);
1702 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1703 int);
1704 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1705 int *, int *, int *, int, u_int32_t);
1706 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
1707 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
1708 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
1709 int);
1710 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1711 int);
1712 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
1713 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
1714 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
1715 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
1716 int *, u_int32_t, int);
1717
1718 extern struct pfi_kif *pfi_all;
1719
1720 void pfi_initialize(void);
1721 #ifdef _MODULE
1722 void pfi_destroy(void);
1723 #endif /* _MODULE */
1724 struct pfi_kif *pfi_kif_get(const char *);
1725 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs);
1726 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs);
1727 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
1728 void pfi_attach_ifnet(struct ifnet *);
1729 void pfi_detach_ifnet(struct ifnet *);
1730 void pfi_attach_ifgroup(struct ifg_group *);
1731 void pfi_detach_ifgroup(struct ifg_group *);
1732 void pfi_group_change(const char *);
1733 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
1734 sa_family_t);
1735 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
1736 void pfi_dynaddr_remove(struct pf_addr_wrap *);
1737 void pfi_dynaddr_copyout(struct pf_addr_wrap *);
1738 void pfi_fill_oldstatus(struct pf_status *);
1739 int pfi_clr_istats(const char *);
1740 int pfi_get_ifaces(const char *, struct pfi_kif *, int *);
1741 int pfi_set_flags(const char *, int);
1742 int pfi_clear_flags(const char *, int);
1743
1744 u_int16_t pf_tagname2tag(char *);
1745 void pf_tag2tagname(u_int16_t, char *);
1746 void pf_tag_ref(u_int16_t);
1747 void pf_tag_unref(u_int16_t);
1748 int pf_tag_packet(struct mbuf *, int, int);
1749 u_int32_t pf_qname2qid(char *);
1750 void pf_qid2qname(u_int32_t, char *);
1751 void pf_qid_unref(u_int32_t);
1752
1753 extern struct pf_status pf_status;
1754 extern struct pool pf_frent_pl, pf_frag_pl;
1755 #ifdef __NetBSD__
1756 extern krwlock_t pf_consistency_lock;
1757 #else
1758 extern struct rwlock pf_consistency_lock;
1759 #endif /* !__NetBSD__ */
1760
1761 struct pf_pool_limit {
1762 void *pp;
1763 unsigned limit;
1764 };
1765 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
1766
1767 /*
1768 * misc compatibility definitions
1769 */
1770 #if !defined(PRIu32)
1771 #define PRIu32 "u" /* XXX */
1772 #endif
1773
1774 #if !defined(NO_PID)
1775 #define NO_PID (PID_MAX + 1)
1776 #endif
1777
1778 #if defined(__NetBSD__)
1779 /* rwlock compatibility definitions */
1780 #define rw_enter_write(a) rw_enter((a), (RW_WRITER))
1781 #define rw_exit_write(a) rw_exit((a))
1782 #define rw_enter_read(a) rw_enter((a), (RW_READER))
1783 #define rw_exit_read(a) rw_exit((a))
1784 #endif /* __NetBSD__ */
1785
1786 #endif /* _KERNEL */
1787
1788 extern struct pf_anchor_global pf_anchors;
1789 extern struct pf_anchor pf_main_anchor;
1790 #define pf_main_ruleset pf_main_anchor.ruleset
1791
1792 /* these ruleset functions can be linked into userland programs (pfctl) */
1793 int pf_get_ruleset_number(u_int8_t);
1794 void pf_init_ruleset(struct pf_ruleset *);
1795 int pf_anchor_setup(struct pf_rule *,
1796 const struct pf_ruleset *, const char *);
1797 int pf_anchor_copyout(const struct pf_ruleset *,
1798 const struct pf_rule *, struct pfioc_rule *);
1799 void pf_anchor_remove(struct pf_rule *);
1800 void pf_remove_if_empty_ruleset(struct pf_ruleset *);
1801 struct pf_anchor *pf_find_anchor(const char *);
1802 struct pf_ruleset *pf_find_ruleset(const char *);
1803 struct pf_ruleset *pf_find_or_create_ruleset(const char *);
1804 void pf_rs_initialize(void);
1805
1806 #ifdef _KERNEL
1807 int pf_anchor_copyout(const struct pf_ruleset *,
1808 const struct pf_rule *, struct pfioc_rule *);
1809 void pf_anchor_remove(struct pf_rule *);
1810
1811 #endif /* _KERNEL */
1812
1813 /* The fingerprint functions can be linked into userland programs (tcpdump) */
1814 int pf_osfp_add(struct pf_osfp_ioctl *);
1815 #ifdef _KERNEL
1816 struct pf_osfp_enlist *
1817 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
1818 const struct tcphdr *);
1819 #endif /* _KERNEL */
1820 struct pf_osfp_enlist *
1821 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *,
1822 const struct tcphdr *);
1823 void pf_osfp_flush(void);
1824 int pf_osfp_get(struct pf_osfp_ioctl *);
1825 void pf_osfp_initialize(void);
1826 #ifdef _MODULE
1827 void pf_osfp_destroy(void);
1828 #endif /* _MODULE */
1829 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
1830 struct pf_os_fingerprint *
1831 pf_osfp_validate(void);
1832
1833
1834 #endif /* _NET_PFVAR_H_ */
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